[Cjmovie]

We've found that duct tape makes a really good conveyor belt (slight redesign on the bottom intake area of our bot). Just put it between two rollers with the sticky side out. Tons of grip!

However, we recently switched to shelf liner based conveyor that we completely covered in duct tape to hold it together. Less slip on the rollers, more on the balls. All in all, works just as well. It has a tendency to move slightly towards the left side, but because it's made so easily we can just cut it and put it back where it needs to go.

It also makes some good "slip" points for the orbit balls. Really cheap way of integrating a clutch-like effect into individual rollers.